Audio listening system



FIG. 1 is a front perspective view of an audio listening system;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken lines in the figures show portions of the audio listening system that form no part of the claimed design. 

CLAIM We claim the ornamental design for an audio listening system, as shown and described. 